The $50 million lawsuit against Alexander Wang is in flux. Lawyers for former Wang employee Wenyu Lu, who slapped the fashion designer with a suit for allegedly exploitative labor practices, filed a motion Thursday to discontinue the case. The suit was filed in Queens Supreme Court this month, but Lu’s lawyer, Ming Hai, told us the case will be refiled in federal court and handed off to a lawyer specializing in labor law. Hai says he wasn’t fired and will continue to consult on the case. Wang and his brother, Dennis, are being accused of keeping sweatshop-like conditions at his 386 Broadway offices, with employees claiming they worked 16-hour days without overtime pay and suffered injuries and illnesses. Another ex-employee, Flor Duante, claimed she worked more than 90-hour weeks and was fired after filing for workers compensation. A rep for Wang told Page Six, “The claims of sweatshop conditions were completely and utterly untrue in every respect.”